From: Qi Liu <[email protected]>

[ Upstream commit 8b6ec999b198b59ae61e86e70f5e9df73fe4754f ]

We should put the reference count of the fence after calling
virtio_gpu_cmd_submit(). So add the missing dma_fence_put().

Fixes: 2cd7b6f08bc4 ("drm/virtio: add in/out fence support for explicit 
synchronization")
Co-developed-by: Xin He <[email protected]>
Signed-off-by: Xin He <[email protected]>
Signed-off-by: Qi Liu <[email protected]>
Reviewed-by: Muchun Song <[email protected]>
Link: 
http://patchwork.freedesktop.org/patch/msgid/[email protected]
Signed-off-by: Gerd Hoffmann <[email protected]>
Signed-off-by: Sasha Levin <[email protected]>
---
 drivers/gpu/drm/virtio/virtgpu_ioctl.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/gpu/drm/virtio/virtgpu_ioctl.c 
b/drivers/gpu/drm/virtio/virtgpu_ioctl.c
index 512daff920387..1fc3fa00685d0 100644
--- a/drivers/gpu/drm/virtio/virtgpu_ioctl.c
+++ b/drivers/gpu/drm/virtio/virtgpu_ioctl.c
@@ -180,6 +180,7 @@ static int virtio_gpu_execbuffer_ioctl(struct drm_device 
*dev, void *data,
 
        virtio_gpu_cmd_submit(vgdev, buf, exbuf->size,
                              vfpriv->ctx_id, buflist, out_fence);
+       dma_fence_put(&out_fence->f);
        virtio_gpu_notify(vgdev);
        return 0;
 
-- 
2.25.1



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